"In August 1932, the then Prime Minister of Britain, Ramsay Macdonald gave his 'award' known as the Communal Award. According to it, separate representation was to be provided for the Muslims, Sikhs, Indian Christians, Anglo-Indians, Europeans, and Dalits. The depressed classes were assigned a number of seats to be filled by election from special constituencies in which voters belonging to the depressed classes only could vote.

"In August 1932, the then Prime Minister of Britain, Ramsay Macdonald gave his 'award' known as the Communal Award. According to it, separate representation was to be provided for the Muslims, Sikhs, Indian Christians, Anglo-Indians, Europeans, and Dalits. The depressed classes were assigned a number of seats to be filled by election from special constituencies in which voters belonging to the depressed classes only could vote."
https://en.wikipedia.org/wiki/Communal_Award